Battery packaging device

Abstract

The utility model relates to the field of battery packaging, in particular to a battery packaging device, and aims to solve the problem that an existing battery packaging device cannot completely isolate a battery from a lining. In order to achieve the purpose, the battery packaging device comprises a first lining and a protection structure, the first lining is provided with a first groove, the first groove is used for containing a battery, and the protection structure is an independently-formed prefabricated part, is arranged in the first groove and is used for isolating the battery from the first groove. The protection structure is an independently formed prefabricated part and has no fluidity, so that the thickness of the protection structure can be ensured to be almost uniform through a process, isolation failure caused by thick groove bottom position and thin side wall position like an adhesive layer is avoided, the battery can be completely isolated from the lining, direct contact friction between the battery and the lining is effectively prevented, and the service life of the battery is prolonged. And the battery is prevented from smudginess.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of battery packaging, and specifically provides a battery packaging device. BACKGROUND

[0002] When the battery is transported across regions, it needs to be protected by special packaging to improve the efficiency of transportation and production. In the prior art, the battery packaging includes an inner liner having a recess, and the battery is placed in the recess. To avoid the dirt caused by the friction between the battery and the inner liner, the common practice is to use a low-cost polystyrene foam (EPS) material for the inner liner, and to increase protection between the inner liner and the battery. The protection is a glue layer formed by glue, so that the battery does not directly contact the inner liner.

[0003] Usually, the glue layer is covered on the inner liner by spraying, brushing or overall soaking, and then dried. However, since the glue is a fluid, it is easy to flow to the bottom during processing, resulting in thick bottom and thin side, and it is difficult to ensure the uniformity of the thickness, and it is impossible to completely achieve the purpose of isolating the battery from the inner liner.

[0004] Correspondingly, there is a need for a new battery packaging device to solve the above problems.

[0005] Application Content

[0006] The present application aims to solve the above technical problems, i.e. to solve the problem that the existing battery packaging device cannot completely isolate the battery from the inner liner.

[0007] The present application provides a battery packaging device, characterized in that it comprises: a first inner liner provided with a first recess for accommodating a battery; and a protection structure which is a separately formed prefabricated part and is at least partially arranged in the first recess for isolating the battery from the first recess.

[0008] In the optional technical solution of the above battery packaging device, the protection structure is blow molded.

[0009] In the optional technical solution of the above battery packaging device, the first recess comprises a second accommodating groove for accommodating an end portion of the battery and a first accommodating groove formed on the bottom of the second accommodating groove, and the protection structure comprises a first protection groove arranged in the first accommodating groove for isolating a protruding structure on the end portion from the first accommodating groove.

[0010] In an optional technical solution of the battery packaging device, the protection structure further comprises a second protection groove, the first protection groove is formed on a groove bottom of the second protection groove, the second protection groove is arranged in the second accommodating groove, and the second protection groove is used for isolating the end portion from the second accommodating groove.

[0011] In an optional technical solution of the battery packaging device, the first accommodating groove comprises a pole accommodating groove used for accommodating a pole on the end portion, and the first protection groove comprises a pole protection groove used for isolating the pole from the pole accommodating groove; and / or the first accommodating groove comprises an explosion valve accommodating groove used for accommodating an explosion valve on the end portion, and the first protection groove comprises an explosion valve protection groove used for isolating the explosion valve from the explosion valve accommodating groove.

[0012] In an optional technical solution of the battery packaging device, the protection structure further comprises a protection body, the second protection groove is arranged on the protection body, and the protection body is connected with a wall surface outside the first groove of the first inner liner.

[0013] In an optional technical solution of the battery packaging device, the thickness of the protection structure is 0.1 mm to 0.3 mm; and / or the protection structure is a plastic structure.

[0014] In an optional technical solution of the battery packaging device, the protection structure is attached to the first inner liner; and / or an outer edge of the protection structure is located in an outer edge of the first inner liner.

[0015] In an optional technical solution of the battery packaging device, the first groove is arranged at a bottom of the first inner liner, the first groove is used for accommodating a top of the battery, a top of the first inner liner is provided with a second groove used for accommodating a bottom of the battery; and the battery packaging device further comprises a second inner liner and a third inner liner, the second inner liner is arranged below the first inner liner, a top of the second inner liner is also provided with the second groove used for accommodating the bottom of the corresponding battery, the third inner liner is arranged above the first inner liner, a bottom of the third inner liner is also provided with the first groove used for accommodating the top of the corresponding battery, and the corresponding protection structure is arranged in the first groove.

[0016] In an optional technical solution of the battery packaging device, the battery packaging device further comprises a box body and a desiccant, the first inner liner, the second inner liner and the third inner liner are arranged in the box body, the desiccant is arranged at an edge of a top of the first inner liner and / or the second inner liner, or the desiccant is used for being placed between the plurality of batteries.

[0017] As can be appreciated by those skilled in the art, the battery packaging device of the present application comprises a first inner liner and a protection structure, the first inner liner is provided with a first groove for accommodating the battery, and the protection structure is a separately formed preform arranged in the first groove for isolating the battery from the first groove. Since the protection structure is a separately formed preform without fluidity, its thickness can be ensured to be almost uniform through the process, and the isolation failure caused by the thick groove bottom and the thin side wall of the adhesive layer will not occur, the battery can be completely isolated from the inner liner, direct contact and friction between the battery and the inner liner can be effectively prevented, and the battery can be prevented from being dirty. In addition, compared with the film structure without a specific shape, the protection structure also has obvious advantages. The film usually does not have a specific shape, and changes according to the shape of the battery when it is in contact with the battery. However, this property makes the film extremely easy to break during actual use, and once the film is broken, the protection and isolation effect of the film on the battery will be greatly reduced. In contrast, the protection structure of the present application can have a shape matching the shape of the battery because it is a separately formed preform. By selecting a material with appropriate hardness for manufacturing, the protection structure can not only withstand certain external impact and is not easy to deform, but also performs better in isolation effect, and can provide more reliable and durable protection for the battery. BRIEF DESCRIPTION OF DRAWINGS

[0018] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0019] Figure 1 is a schematic diagram of the overall structure of the battery packaging device of the present application;

[0020] Figure 2 is a schematic diagram of the internal structure of the battery packaging device of the present application;

[0021] Figure 3 is an exploded view of the battery packaging device of the present application;

[0022] Figure 4 is a schematic diagram of the overall structure of the first inner liner and the protection structure of the battery packaging device of the present application;

[0023] Figure 5 is a schematic diagram of the structure of the first inner liner and the protection structure of the battery packaging device of the present application after being separated;

[0024] Figure 6 is a schematic diagram of the overall structure of the third inner liner and the protection structure of the battery packaging device of the present application;

[0025] Figure 7 is a schematic diagram of the structure of the third inner liner and the protection structure of the battery packaging device of the present application after being separated.

[0026] BRIEF DESCRIPTION OF DRAWINGS:

[0027] 1 - first inner liner; 11 - first groove; 111 - first accommodating groove; 1111 - pole accommodating groove; 1112 - explosion-proof valve accommodating groove; 112 - second accommodating groove; 12 - second groove; 2 - protection structure; 21 - protection body; 22 - first protection groove; 221 - pole protection groove; 222 - explosion-proof valve protection groove; 23 - second protection groove; 3 - second inner liner; 4 - third inner liner; 5 - box body; 51 - lower cover plate; 52 - upper cover plate; 53 - fence; 6 - pallet. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present application will be described below with reference to the drawings. It should be understood by those skilled in the art that the embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. Those skilled in the art can make adjustments as needed to adapt to specific application occasions.

[0029] It should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0030] As Figures 1 to 7As shown, the application provides a battery packaging device, which comprises a first inner liner 1 and a protective structure 2. The first inner liner 1 is provided with a first recess 11 for accommodating a battery, which can be a square battery or a circular battery, etc. The protective structure 2 is a separately formed prefabricated part, which is at least partially arranged in the first recess 11 and used to isolate the battery from the first recess 11. Since the protective structure 2 is a separately formed prefabricated part without fluidity, its thickness can be ensured to be almost uniform through the process, and the isolation failure caused by the thick bottom and thin side wall of the adhesive layer will not occur, so that the battery can be completely isolated from the inner liner, effectively preventing the direct contact and friction between the battery and the inner liner, and avoiding the contamination of the battery. In addition, compared with the film structure without a specific shape, the protective structure 2 also has obvious advantages. The film usually does not have a specific shape, and changes according to the shape of the battery when it is in contact with the battery. However, this characteristic makes the film extremely easy to break during actual use, and once the film is broken, the protective and isolation effect on the battery will be greatly reduced. In contrast, the protective structure 2 of the application can have a shape matching the outer shape of the battery, and by selecting a material with appropriate hardness for manufacturing, the protective structure 2 can not only withstand certain external impact and is not easy to deform, but also performs better in isolation effect, providing more reliable and durable protection for the battery.

[0031] The protective structure 2 of the application can be a plastic structure. For example, transparent PET (polyethylene terephthalate) or polypropylene (PP) or the like can be used. If PET material is used, it is more environmentally friendly, and the protective structure 2 has higher hardness, which can effectively avoid isolation failure caused by breakage during friction. The material of the first inner liner 1 can be EPS (polystyrene foam), a mixture of foamed polystyrene and polyethylene (EPO), or polypropylene foam (EPP), etc. The thickness of the protective structure 2 is preferably in the range of 0.1 mm to 0.3 mm, such as 0.2 mm, 0.15 mm, etc. The selection of a thickness of 0.1 mm or more can avoid the protective structure 2 being too thin, ensure the isolation effect, and allow the protective structure 2 to have more choices in the process. A thickness of 0.3 mm or less can avoid the protective structure 2 being too thick and heavy, and avoid problems in the size matching between the inner liner and the battery.

[0032] As a possible implementation, the protection structure 2 is blow molded. Since the blow molding process is mature, it can precisely control various parameters of the protection structure 2, especially in thickness control. In actual production operation, the thickness deviation of the protection structure 2 manufactured by blow molding can be strictly limited within a very small range, specifically, it can be controlled within 0.05 mm, avoiding local weak links due to uneven thickness, thereby effectively improving the protection performance of the battery. In addition, since this production process is mature, the production cost can be reduced to a very low level.

[0033] As a possible implementation, the first recess 11 on the first inner liner 1 includes a second accommodating groove 112 and a first accommodating groove 111 formed at the bottom of the second accommodating groove 112, the second accommodating groove 112 is used to accommodate the battery end, and the first accommodating groove 111 is used to accommodate the protruding structure on the battery end. The protection structure 2 includes a protection body 21, and the protection body 21 is formed with a second protection groove 23, and the bottom of the second protection groove 23 is formed with a first protection groove 22. The first protection groove 22 is arranged in the first accommodating groove 111, and the first protection groove 22 is used to isolate the protruding structure from the first accommodating groove 111, and the second protection groove 23 is arranged in the second accommodating groove 112, and the second protection groove 23 is used to isolate the battery end from the second accommodating groove 112.

[0034] Firstly, the first recess 11 on the first inner liner 1 divides the second accommodating groove 112 and the first accommodating groove 111, which accurately corresponds to the battery end and the protruding structure thereon, and the protection body 21 of the protection structure 2 is correspondingly provided with the second protection groove 23 and the first protection groove 22, so that the protection structure 2 can match the contour of the battery in all directions, ensuring that the battery, whether the end or the protruding structure thereon, can be properly accommodated and isolated. Greatly improve the stability of the battery in the packaging device, effectively prevent the battery from colliding and damaging due to shaking and displacement during storage and transportation, and provide precise protection for the battery. Secondly, since the protruding structure of the battery is more fragile and prone to damage than other parts of the battery during dynamic processes such as storage and transportation, and it has a high risk of frequent contact and friction with the first inner liner 1. By arranging the first protection groove 22 in the first accommodating groove 111, which is specifically used to isolate the protruding structure from the first accommodating groove 111, direct contact between the two is completely avoided, which can prevent the protruding structure from being scratched and worn due to friction, thereby affecting the performance and safety of the battery. Thirdly, for the overall protection of the battery end, the second protection groove 23 separates the battery end from the second accommodating groove 112 to prevent the battery end from being contaminated. Finally, this nested design of the first recess 11 and the protection structure 2 enables them to fit tightly, optimizing the space utilization efficiency, allowing the battery packaging device to achieve efficient protection function under a compact structure, facilitating mass production, storage and transportation, reducing costs while improving product competitiveness.

[0035] The first accommodating groove 111 and the first protection groove 22 of the present application can be adjusted according to the specific form of the protruding structure on the battery, as long as their shapes can match the protruding structure on the battery. As a possible implementation, referring to Figure 2 , the first accommodating groove 111 includes a pole accommodating groove 1111 and an explosion valve accommodating groove 1112. Further, the pole accommodating groove 1111 is arranged on the opposite sides of the explosion valve accommodating groove 1112. Correspondingly, referring to Figure 4 and Figure 6 , the first protection groove 22 includes a pole protection groove 221 and an explosion valve protection groove 222, and the pole protection groove 221 is arranged on the opposite sides of the explosion valve protection groove 222. After the protection structure 2 is installed on the first inner liner 1, the pole protection grooves 221 on both sides are directly matched and installed in the corresponding pole accommodating grooves 1111, and the explosion valve protection groove 222 in the middle is directly matched and installed in the corresponding explosion valve accommodating groove 1112. In this way, the general structure of the battery can be adapted, the battery poles can be effectively protected, the battery poles can be prevented from being contaminated due to friction, and the appearance of the explosion valve can be ensured to be not affected by water vapor condensation beads in the battery packaging device, thereby ensuring the product quality during storage and transportation. It should be noted that the above description is only exemplary, and the specific arrangement can be adjusted according to the actual structure of the battery. For example, if no explosion valve is arranged at the end of the battery, the explosion valve accommodating groove 1112 and the explosion valve protection groove 222 can be omitted.

[0036] As a possible implementation, the protection body 21 is connected to the wall surface of the first inner liner 1 outside the first recess 11. Among them, a plurality of second protection grooves 23 can be formed on the protection body 21, and the groove bottom of each second protection groove 23 is provided with a first protection groove 22. Correspondingly, a second accommodating groove 112 corresponding to the second protection groove 23 is formed on the first inner liner 1, and the groove bottom of each second accommodating groove 112 is formed with a first accommodating groove 111 corresponding to the first protection groove 22. The protection body 21 is connected to the part of the first inner liner 1 except the first accommodating groove 111 and the second accommodating groove 112. This makes the protection structure 2 closely match the first inner liner 1, and can accurately correspond to the end of the battery and the protruding structure thereon, and match the contour of the battery in all directions. Among them, the first protection groove 22 of the protection structure 2 of the present application can be consistent with the size of the first accommodating groove 111, and the second protection groove 23 can be consistent with the size of the second accommodating groove 112, so as to achieve the best matching effect.

[0037] As a preferred embodiment, the protective structure 2 is directly attached to the first inner liner 1, which can minimize the gap between the protective structure 2 and the first inner liner 1, optimize the internal space of the packaging device to the greatest extent under the premise of ensuring the protection function, make the structure of the battery packaging device more compact, facilitate storage and transportation, and reduce packaging and transportation costs. It can also effectively prevent dust, impurities and other impurities from entering from the gap between the protective structure 2 and the first inner liner 1, and form a more comprehensive and reliable protection for the battery. Among them, the protective structure 2 of the present application can be attached after the first inner liner 1 is integrally formed by plastic molding, or it can be processed in half and attached twice. Different processing methods do not affect the use effect.

[0038] As a possible embodiment, the outer edge of the protective structure 2 is located in the outer edge of the first inner liner 1. For example, the overall size of the protective structure 2 is 5-10mm smaller than the size of the first inner liner 1, so as to avoid the protective structure 2 exceeding the outer edge of the first inner liner 1. Such a setting can ensure that the protective structure 2 functions within the range defined by the first inner liner 1, and will not cause the protective structure 2 to deform or even break first when the battery packaging device is subjected to external force, impact or other situations, making the structure of the entire battery packaging device more stable and ensuring the continuous and effective protection of the battery by the protective structure 2.

[0039] As a possible embodiment, the first recess 11 is provided at the bottom of the first inner liner 1, the first recess 11 is used to accommodate the top of the battery, the top of the first inner liner 1 is provided with a second recess 12, and the second recess 12 is used to accommodate the bottom of the battery; the battery packaging device further comprises a second inner liner 3 and a third inner liner 4, the second inner liner 3 is arranged below the first inner liner 1, the top of the second inner liner 3 is also provided with a second recess 12 for accommodating the bottom of the corresponding battery, the third inner liner 4 is arranged above the first inner liner 1, the bottom of the third inner liner 4 is also provided with a first recess 11 for accommodating the top of the corresponding battery, and the protective structure 2 introduced above can also be arranged in the first recess 11 of the third inner liner 4. The installation method and corresponding size between the third inner liner 4 and the protective structure 2 are similar to those between the first inner liner 1 and the protective structure 2, and will not be described again. Among them, the number of first inner liners 1 can be one or more. This setting can place the batteries in at least two layers between the inner liners. When the number of first inner liners 1 is more than one, the plurality of first inner liners 1 are arranged in a spaced stacked manner, and the batteries are placed in at least three layers, respectively, between the first inner liner 1 and the second inner liner 3, between adjacent first inner liners 1, and between the first inner liner 1 and the third inner liner 4.

[0040] As a possible embodiment, with reference to Figure 1 and Figure 2The battery packaging device further comprises a box body 5, the box body 5 comprises a lower cover plate 51, an upper cover plate 52 and a fence 53, the lower cover plate 51 is arranged on the bottom of the fence 53, the upper cover plate 52 is arranged on the top of the fence 53, and the second inner liner 3, the first inner liner 1 and the third inner liner 4 are sequentially stacked on the lower cover plate 51. The battery packaging device can further comprise a pallet 6, and the pallet 6 is arranged on the bottom of the lower cover plate 51.

[0041] As a possible implementation, the battery packaging device further comprises a desiccant, and the desiccant is arranged at the top edge of the first inner liner 1 and / or the second inner liner 3. After the batteries are placed, there is still a space between the outermost battery and the outer edge of the first inner liner 1, and there is also a space between the outermost battery and the outer edge of the second inner liner 3, so the desiccant can be placed in the space. Alternatively, the desiccant is used to be placed between the batteries, specifically, between the adjacent second grooves 12 of the first inner liner 1 and / or between the adjacent second grooves 12 of the second inner liner 3, or the desiccant is directly clamped between the batteries after the batteries are placed. The desiccant in the present application can be in the form of a bag or a strip, and the present application does not limit the specific form thereof.

[0042] The specific operation process of the present application will be introduced below:

[0043] 1. In the design, the size of the second protection groove 23 of the protection structure 2 is consistent with the size of the second containing groove 112 of the first inner liner 1 and the second containing groove 112 of the third inner liner 4, and the overall outer edge size of the protection structure 2 is 5mm-10mm smaller than the overall outer edge size of the first inner liner 1 and the overall outer edge size of the second inner liner 3. After the protection structure 2 is formed by an injection molding machine, it is pasted on the bottom of the first inner liner 1 and the bottom of the third inner liner 4 by using an adhesive, so as to achieve the isolation and protection between the pole and the inner liner;

[0044] 2. After the protection structure 2 is pasted on the first inner liner 1 and the third inner liner 4, the inner liner and the protection structure 2 are shipped as a whole;

[0045] 3. The lower cover plate 51 is placed on the pallet 6, and then the second inner liner 3 is placed in the lower cover plate 51, and the batteries are automatically grabbed into the second grooves 12 at the top of the second inner liner 3 by manual or mechanical hand, and are placed, and the second grooves 12 play a role in fixing the bottom of the battery;

[0046] 4. After the bottom layer of batteries is placed, the first inner liner 1 with the protection structure 2 pasted on the bottom is covered on the top of the batteries, the first grooves 11 at the bottom of the first inner liner 1 play a role in fixing the top of the batteries, and the fixing of the batteries is completed through the first grooves 11 and the second grooves 12, so as to prevent shaking in the transportation process and ensure the safety of transportation;

[0047] 5. Next, pick up the battery and place it into the second groove 12 at the top of the first inner liner 1. Repeat this process for each layer, placing the first inner liner 1 and the battery in the same way. Each first inner liner 1 has a protective structure 2 attached to the bottom of the first groove 11 to protect the top of the battery. After reaching the required number of layers, place the third inner liner 4, with the protective structure 2 attached to the bottom, on top.

[0048] 6. Place a desiccant in the middle of the battery or at any edge of the first inner liner 1 or the second inner liner 3 for moisture protection. The desiccant can be in the form of a bag or a strip.

[0049] 7. Place the outermost fence 53 to protect the middle part of the battery, and then cover the top with the top cover plate 52; after completion, wrap the entire package with stretch film to prevent the package from getting dirty due to rain or other pollution.

[0050] In summary, during long-distance transportation, the contact surface between the top patch and the first groove 11 of the inner liner rubs against each other for extended periods, leading to contamination and staining, affecting the battery's appearance. Furthermore, the terminals, made of aluminum or copper, are prone to discoloration and impurities in high-humidity environments, which can result in poor weld appearance during subsequent module welding. To address these issues, this application provides a battery packaging device that isolates the top of the battery from the inner liner, sealing the terminals and explosion-proof valve, thus reducing the impact of the external environment and the packaging itself on the battery. Simultaneously, it reduces the number of steps in the packaging process, lowering packaging costs.

[0051] As an alternative implementation, although this application describes the protective structure 2 as including a protective body 21, a second protective groove 23 formed on the protective body 21, and a first protective groove 22 formed at the bottom of the second protective groove 23, this is not intended to limit the scope of protection of this application. For example, the protective structure 2 of this application may only include the first protective groove 22, which is attached to the first receiving groove 111. Or the protective body 21 may be omitted, so that the protective structure 2 only includes the second protective groove 23 and the first protective groove 22 formed at the bottom of the second protective groove 23, etc. These adjustments do not deviate from the principle of this application and are all within the scope of protection of this application.

[0052] As an alternative implementation, the second inner liner 3 and / or the third inner liner 4 can be omitted, and multiple first inner liners 1 can be stacked in the housing 5, etc. These adjustments do not deviate from the principles of this application and are all within the protection scope of this application.

[0053] As an alternative implementation, this application can omit the desiccant.

[0054] As an alternative embodiment, although the protective structure 2 of the present application is introduced by taking the plastic structure as an example, this is not intended to limit the protection scope of the present application. As long as it can be formed independently, the specific form of adjustment does not deviate from the principle of the present application. For example, the protective structure 2 is a structure composed of plastic and fiber, or a rubber structure, etc. These adjustments do not deviate from the principle of the present application and are within the protection scope of the present application.

[0055] As an alternative embodiment, although the protective structure 2 of the present application is introduced by blow molding, this is not intended to limit the protection scope of the present application. As long as it is a separately formed preform, the molding method can be adjusted. For example, the protective structure 2 is formed by injection molding, 3D printing, or die molding, etc. These adjustments do not deviate from the principle of the present application and are within the protection scope of the present application.

[0056] As an alternative embodiment, although the first groove 11 of the present application is introduced by taking the first accommodating groove 111 formed in the groove bottom of the second accommodating groove 112 as an example, and the protective structure 2 is introduced by taking the first protective groove 22 formed in the groove bottom of the second protective groove 23 as an example, this is not intended to limit the protection scope of the present application. For example, the first accommodating groove 111 and the first protective groove 22 can be omitted, such as the first groove 11 is used to accommodate the bottom of the battery, and the first protective groove 22 is used to isolate the bottom of the battery from the first inner liner 1. These adjustments do not deviate from the principle of the present application and are within the protection scope of the present application.

[0057] So far, the technical solution of the present application has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without deviating from the principle of the present application, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical solutions after these changes or replacements will fall within the protection scope of the present application.

Claims

1. A battery packaging device, characterized by, The battery packaging device comprises: a first inner liner (1) provided with a first recess (11) for accommodating a battery; a protection structure (2) which is a separately formed preform and is arranged at least partially in the first recess (11) to isolate the battery from the first recess (11).

2. The battery packaging device according to claim 1, wherein the protection structure (2) is blow molded.

3. The battery packaging device according to claim 1, wherein the first recess (11) comprises a second accommodating groove (112) for accommodating an end portion of the battery and a first accommodating groove (111) formed at the bottom of the second accommodating groove (112) for accommodating a protruding structure on the end portion, and the protection structure (2) comprises a first protection groove (22) arranged in the first accommodating groove (111) to isolate the protruding structure from the first accommodating groove (111).

4. The battery packaging device according to claim 3, wherein the protection structure (2) further comprises a second protection groove (23) in which the first protection groove (22) is formed at the bottom of the second protection groove (23), and the second protection groove (23) is arranged in the second accommodating groove (112) to isolate the end portion from the second accommodating groove (112).

5. The battery packaging device according to claim 3, wherein the first accommodating groove (111) comprises a pole accommodating groove (1111) for accommodating a pole on the end portion, and the first protection groove (22) comprises a pole protection groove (221) for isolating the pole from the pole accommodating groove (1111); and / or the first accommodating groove (111) comprises an explosion valve accommodating groove (1112) for accommodating an explosion valve on the end portion, and the first protection groove (22) comprises an explosion valve protection groove (222) for isolating the explosion valve from the explosion valve accommodating groove (1112).

6. The battery packaging device according to claim 4, wherein the protection structure (2) further comprises a protection body (21) in which the second protection groove (23) is arranged, and the protection body (21) is connected to a wall surface outside the first recess (11) of the first inner liner (1).

7. The battery packaging device according to claim 1, wherein the thickness of the protection structure (2) is in the range of 0.1 mm to 0.3 mm; and / or the protection structure (2) is a plastic structure.

8. The battery packaging device according to claim 1, wherein the protection structure (2) is attached to the first inner liner (1); and / or The outer edge of the protection structure (2) is located in the outer edge of the first inner liner (1). 9.The battery packaging device according to claim 1, wherein, The first recess (11) is arranged at the bottom of the first inner liner (1), and is used for accommodating the top of the battery; the top of the first inner liner (1) is provided with a second recess (12), and the second recess (12) is used for accommodating the bottom of the battery; and The battery packaging device further comprises a second inner liner (3) and a third inner liner (4), wherein the second inner liner (3) is arranged below the first inner liner (1), the top of the second inner liner (3) is also provided with the second recess (12) used for accommodating the bottom of the corresponding battery, and the third inner liner (4) is arranged above the first inner liner (1), the bottom of the third inner liner (4) is also provided with the first recess (11) used for accommodating the top of the corresponding battery, and the corresponding protection structure (2) is arranged in the first recess (11). 10.The battery packaging device according to claim 9, wherein, The battery packaging device further comprises a box (5) and a desiccant, the first inner liner (1), the second inner liner (3) and the third inner liner (4) are arranged in the box (5), and the desiccant is arranged at the edge of the top of the first inner liner (1) and / or the second inner liner (3), or the desiccant is used for being placed between the batteries.

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